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  • Punch the correct method of operation
    • January 04, 2018

    D&S Trading Co.,Ltd. is professional machine trading company, which respresative for our relative factorys.We supply you first class quality machine with best service. Our machine include all faucets, valve, brass fitting, cartridge, brass parts, teflon tape machines.For more information,welcome to visit our company's website http://www.desuautomatic.com Punc...

  • Faucet Production Process
    • January 05, 2018

    D&S Trading Co.,Ltd. is professional machine trading company, which respresative for our relative factorys.We supply you first class quality machine with best service. Our machine include all faucets, valve, brass fitting, cartridge, brass parts, teflon tape machines.For more information,welcome to visit our company's website http://www.desuautomatic.com Faucet production process Faucet p...

  • Fire copper smelting
    • June 03, 2021

    At present, more than 80% of copper in the world is made by fire method, and it is mainly used to process copper sulfide ore. Pyrometallurgy is to melt copper ore (or calcine, agglomerate, etc.) and flux at high temperature, or directly smelt into blister copper, or first smelt into matte (melt mainly composed of copper, iron and sulfur) Then smelt into blister copper. Except for some operations (...

  • Working principle of punching machine
    • March 15, 2023

    The stainless steel punching machine adopts the lever principle, the force is applied by the screw rod, the operation is convenient and labor-saving, the punching is precise, uniform and smooth, and the punching is completed in one time without secondary punching. The stainless steel punching machine is developed from ultra-high-strength steel plates, with excellent quality, long service life and ...

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D&S Automatic Co.,Ltd. located at the China plumbing town of Fujian Nan'an,It is a professional machine company. We supply you modern facilities,such as faucet, valve, brass fitting, cartridge, brass fittings, teflon tape and all kinds of machines. 

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